This is the most attractive and compact travel adapter available that covers 150 or more countries. The plugs are all encased in the unit itself (except for the snap-on USB adapter), but by pressing the release button you push out the plug you need, attach it to the socket, then power your device with a plug or a USB connection. It has a built-in fuse to protect your gadgets from surges and comes with a spare. If space is at a premium and you tend to lose stray pieces easily, this is the best option for items that don’t require voltage conversion as well.